The Fuel Pressure Regulator was purchased new a year ago from NAPA, so i doubt it would be that. Yeah OEM Pump it is in there now, I have had to put the pedal down for about a month now to start it......otherwise it just keeps cranking and wont turn over......and a shop wanted $100 to get a fuel pressure test, that is way too much.......how can i tell myself if its an injector problem?